Lab mixer



FIG. 1 is a front perspective view of a lab mixer showing my new design, with the shaft broken in the center to indicate indeterminate length;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof. 

The ornamental design for lab mixer, as shown and described. 